<template>
  <XtxBread>
    <XtxBreadItem to='/'>首页</XtxBreadItem>
    <XtxBreadItem v-if='category.top' :to='`/category/${category.top.id}`'>{{ category.top.name }}</XtxBreadItem>
    <Transition name='fade-right' mode='out-in'>
      <XtxBreadItem v-if='category.sub' :key='category.sub.id'>{{ category.sub.name }}</XtxBreadItem>
    </Transition>
  </XtxBread>
</template>

<script>
import { useStore } from 'vuex'
import { useRoute } from 'vue-router'
import { computed } from 'vue'
export default {
  name: 'SubBread',
  setup () {
    const store = useStore()
    const route = useRoute()
    const category = computed(() => {
      const obj = {}
      store.state.category.list.forEach(top => {
        top.children && top.children.forEach(sub => {
          if (sub.id === route.params.id) {
            obj.sub = { id: sub.id, name: sub.name }
            obj.top = { id: top.id, name: top.name }
          }
        })
      })
      return obj
    })
    return { category }
  }
}
</script>

<style>

</style>
